220 ENTOMOLOGICAL NEWS. [Oct., '19 



of the subcylindrical basal enlargement, which latter has a length 2^ 

 times its diameter. Terminal segment reduced, with a length about 

 twice its diameter and tapering to an irregular, rudimentary knob. 

 Palpi : first segment short, quadrate, second a little longer, more slen- 

 der, third as long as the second, and the fourth about ]/2 longer than 

 the third. 



Mesonotum dark reddish brown. Scutellum reddish brown. Post- 

 scutellum yellowish brown. 



Abdomen mostly dark yellowish brown, the basal genitalic seg- 

 ments darker. 



Wings hyaline ; halteres fuscous yellowish. Coxae yellowish brown. 

 Legs mostly fuscous straw, the distal tarsal segments dark brown. 



Genitalia: basal clasp segment short, stout, terminal clasp segment 

 short, somewhat swollen distally, tapering and curving to an irregular, 

 obtuse, heavily setose apex. 



Type Cecid. A. 2903. 



HORMOSOMYIA n. gen. 



The ^^enus belongs in the Porricondylariae and may be easily 

 recognized by the five long veins, the cross vein being nearly 

 parallel with costa, the fourth vein simple, weaker than the 

 others and obsolescent basally, the fifth vein simple and the 

 sixth free. The structure of the antennae and the genitalia of 

 the male are most suggestive of Porricondyla Rond. from 

 which it is easily separated by alar characters. 



Type : H. oregonensis n. sp. 



Hormosomyia oregonensis n. sp. 



$. Length 4 mm. Antennae as long as the body, sparsely haired, 

 16 segments, the 5th with a stem 2^ times the length of the basal 

 enlargement, which latter has a length nearly three times its diam- 

 eter, a sub-basal whorl of short, stout setae, a subapical whorl of much 

 longer, slender setae and a sparse apical whorl of shorter, slender 

 setae lying mostly parallel with the axis of the segment. Terminal 

 segment produced, tapering gradually and with a length about five 

 times its diameter and apically an irregular, spindle-shaped appendage. 

 Palpi : moderately long, first segment with a length about three times 

 its diameter, the second and third segments each nearly as long as the 

 first, and the fourth segment nearly twice the length of the third and 

 somewhat dilated. 



Mesonotum shiny reddish brown, the submedian lines sparsely hair- 

 ed, the collar, the posterior median area, scutellum and postscutellum 

 mostly yellowish. 



